main()//唐子豪
{
    long int a,b,c;
    printf("Please enter a optional fraction(a/b):");
    scanf("%ld/%ld",&a,&b);
    printf("It can be decomposed to:");
    while(1){
        if(b%a)
        c=b/a+1;
        else{
            c=b/a;a=1;
        }
        if (a==1){
            prinf("1/%ld\n",c);
            break;
        }
        else 
            printf("1/%ld+",c);
            a=a*c-b;
            b=b*c;
            if(a==3)
                {   printf("1/%ld+1/%ld\n",b/2,b);break;}
        
        
    }

}